Chesapeake Bay water temperature
Chesapeake Bay, Sweethall Pier · Sea/Coast
The current water temperature at Chesapeake Bay is 17.4 °C (as of October 28, 2026, source: NOAA NERRS SWMP).
The sea lags the air by weeks: the warmest water often arrives after the warmest days. Measured buoy values show this honestly.
Measurement series & statistics
This measurement series includes 417 data points since September 1, 2026.
Lowest recorded value: 16.6 °C on October 24, 2026 · highest value: 30.7 °C on September 4, 2026.
In October, temperatures have ranged between 16.6 °C and 22.9 °C.
The current value is 3.2 °C below the October average of this series.
Nearby waters
More measuring points: Chesapeake Bay
Frequently asked questions
Can you swim at Chesapeake Bay right now?
The current water temperature is 17.4 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Chesapeake Bay?
Currently 17.4 °C (updated continuously).
How warm is at Chesapeake Bay in October?
In October, the water temperature recently averaged 20.6 °C.
